package org.csu.mypetstore_seller.service;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import org.csu.mypetstore_seller.domain.Seller;
import org.csu.mypetstore_seller.persistence.SellerMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.security.MessageDigest;

@Service
public class SellerService {
    @Autowired
    private SellerMapper sellerMapper;

    // 登录验证
    public Seller login(String username, String password) {
        QueryWrapper<Seller> queryWrapper = new QueryWrapper<>();
        queryWrapper.eq("username", username)
                .eq("password", string2MD5(password))
                .eq("delete_flag", 0);
        return sellerMapper.selectOne(queryWrapper);
    }

    // MD5加密
    public String string2MD5(String inStr) {
        MessageDigest md5 = null;
        try {
            md5 = MessageDigest.getInstance("MD5");
        } catch (Exception e) {
            System.out.println(e.toString());
            e.printStackTrace();
            return "";
        }
        char[] charArray = inStr.toCharArray();
        byte[] byteArray = new byte[charArray.length];

        for (int i = 0; i < charArray.length; i++) {
            byteArray[i] = (byte) charArray[i];
        }
        byte[] md5Bytes = md5.digest(byteArray);
        StringBuffer hexValue = new StringBuffer();
        for (int i = 0; i < md5Bytes.length; i++) {
            int val = ((int) md5Bytes[i]) & 0xff;
            if (val < 16){
                hexValue.append("0");
            }
            hexValue.append(Integer.toHexString(val));
        }
        return hexValue.toString();
    }
}
